Cement bailer



w. CREEK CEMENT BAILER Sept. 15, 1936.

Filed April 1-5, 1934 2 Shets-Sheet 1 1%. I FM. 2 was 1%. 5. n4. 6'

' INVENTOR. I

ATTORNEY.

w. CREEK CEMENT BAILER Sept. 15, 1935.

2 Sheets-Sheet 2 Filed April 15, 1934 Walter Crcek A TTORNE Y.

Patented Sept. 15, 1936 UNITED STATES 2,054,314 CEMENT BAILER.

Walter Creek, Wichita, Kane, assignor' of one-' third to Viola E. Creek, Wichita, Kans., and one-third to Harold 0. Greek, Eureka, Kans.

Application April 13, 1934, Serial No. 720,390

6 Claims.

My invention relates to an improvement in cementing bailers for use in cementing tubing in oil wells. The object of my invention is to provide a device such that concrete may be placed at '5 a definite place in an oil well. Another object is to provide a device that will take the concrete to the desired place in the oil well and deposit it there without the Water and oil in the well being allowed to mix with the concrete before it reaches 10 the place where it is to bedeposited. These and other objects will be more fully describedas this description progresses.

Now referring to the drawings in which the same characters of reference designate the same 15 part throughout the several figures, Fig. 1 is a sectional view of my concrete carrying device. Fig. 2 is a side view of my concrete carrying device. Fig. 3 is a front View of my concrete carrying device. Fig. 4 is a sectional view taken on the line 20 IV-IV in Fig. 3. Fig. 5 is a side view partly in section of my concrete carrying device in the dumping position. Fig. 6 is a side view partly in section taken at right angles to that shown in Fig. 5. Fig. 7 is a sectional view taken on the line '25 VII-VII in Fig. 3. Fig. 8 is a plan view of the polished rod slip. Fig. 9 is a side View of the polished rod slip. Fig. 10 is an enlarged detail sectional View of'the hydraulic release valve and adjacent parts. Fig. 11 is a sectional view taken 30 on the line XI-IH in Fig. 10. Fig. 12 is a sectional view taken on the line IflL-XII in Fig. 10. Fig. 13 is a longitudinal sectional view similar'to Fig. 10 but with some of the parts shown in elevation instead of in section.

35 In the drawings is shown a tubular element I having a closed upper end which is provided with an eye II by which the device may be supported. At I2 is a casting, into which the lower end of the tubular element II] is threaded. At I3 is a second tubular element, the lower end of which is open and the upper end of which is threaded onto the casting I2. At I4 is an opening in the tube I3, the object of which will be later explained. At I is another opening in the tubular element I3,

45 through which the tubular element I3 may be filled with concrete as will be later explained. At I6 is a polished piston rod, which passes through the casting I2 in which is a packing gland I'I around the piston rod I6, said packing gland being 50 held in place and under compression by the pack- '55 upper end of the. tubular element IIl'and the piston I9 and under pressure therebetween is a helical spring 20 exerting its pressurein a downward direction on the piston I9. In the'tubular'elee ment I3 is a spider element 2I having a hole there: in through which the lower end of the piston rod It may slide, the spider acting as a guide for the lower end of the piston rod.

Rigidly affixed to the polished piston rod I3 is a collar 22 on which rests a helicalrspring 23 that is positioned around the polished piston rod I6. At 24- is a polished rod slip which rests on the spring 23 and is slidablymounted on the polished piston rod I6. At 25 is a second collar which is rigidly positioned on the polished piston rod: I6. The collar 25 is so positioned on the polished piston rod that the polished rod slip 24 rests against the collar 25 which serves to hold the polished rod slip 24 and; the spring 23 in their proper position.

, On the opposite sides of the polished rod slip 2 is pivotally mounted a pair of releasing dogs 23, said dogs'26 are mounted between outwardly projecting ears 21 on the polished rod slip 24. At 28is a pair of outwardly projecting ears on the polished rod slip and through which isa pin 24a,

the object of which will be later explained. In the tubular element I3 is a pair of slots 29 positioned on opposite sides of the tubular element I3. The; sharp upper ends of the releasing dogs 26 project through the slots29 and slide against the oil well tubing 30 as the device is 530 lowered into the oil well. On each side of both of the slots 29 and extending inwardly from the wall of the tubular element I3 is a pair of car like elements 3| which function as guides for the releasing dogs 26 to slide between.

In the cast-ing I2 is a hole in which atubular element 32 is placed and is rigidly maintained in place by the threads 33 on the tube 32 whichare screwed into threads in the hole inthe casting I2. The lowerend of the tubular element 32 is pro.- ,40 vided with a hexagon shaped portion- 32' on which a wrench may be'placed for the purpose of turning the tubular element :32. In the upper end of. the tubular element 32 is a port 34 which is in registry with a port hole 35 that connects between theport .15 3i and the interior space in the tubular element 'At 36' is. a cap element resting on. top of the tubular element 32 and. serving as a closure for said tube. Rigidly attached to said cap36 is a U shaped element 3'! towhich is attached one end of a helical spring 38; V

snugly fitted within the tube 32 is a. second tube .39 which is adapted to he slipped up and down in the tube 32 and thereby'function to open and? close the port 34. It will be understood that the upper end of the tube 39 is open and the helical spring 38 is positioned in the tube 39. At the bottom end of the tube 39 is a pin 40 which passes through the walls of the tube 39- and to which is attached the lower end of the helical spring 38, said spring 38 functioning to pull the tube 39 up in the tube 32 so that the wall of the tube 39 will pass the port 34 and close the port. At 4| is a clevis that is swung on the pin 40 and attached to the clevis 4| is a cable 42 on the lower end of which is a hook 43 that is adapted to be hooked on the pin 24a in the polished rod slip 24 so that the downward movement of the polished rod slip 24 will impart the same downward movement of the tubular element 39 and thereby open the port 34..

At 44 is a horizontal hole into which opens a vertical hole 45 in the casting l2, said hole 45 opens into the space in the tubular element H]. In the hole 44 is threaded a valve seat 46 in which is seated a ball 41 which is compressed between the ball 41 and the wall at the rear of the hole 44.

At 49, in Fig. 10, is shown a threaded hose fitting or a pipe that is threaded into the hole 44 through which oil may be pumped to the space in the tubular element ID for purposes as will be later explained.

After the oilhas been pumped into the tubular element it will be retained there by the ball valve 41 and the fitting-49 may be removed after which a plug 50, see Fig. 13, maybe screwed in the hole attached a flexible circular element 53 such as a piece of belting or stiff leather. which is large enough to fitin the oil well tubing 30 and act as a guide for the element l3, also to act as a feeler to tell when the device contacts water or oil in the tubing 30. At 54 is a'rod or cable, the upper end of which is attached to the lower end of the polished rod. The lower end of the rod or cable 54 is attached to an eye 55 that is rigidly aflixed to the element 5|. Attention is called to the fact that the eye 55 is located off of the center of the element 5| so that when the element 5| is dropped from the tubular element l3, it will turn edge ways as shown in Fig. 5. 7

Now' the operation of my apparatus is as follows:

The apparatus for carrying the concrete or ce ment is prepared for use by first unhooking the pumped through the valve 464| into the tubularelement l and under the piston |9 thereby raising the piston and its connected parts against the pressure of the spring 20. The oil is pumped has been pulled into its closed position against the end of the tubular element I3 as shown in Fig. 1. Now the hose connection or pipe 49 is removed from the hole 44 and the plug 50 is replaced therein.

Now the well is prepared to receive the .concrete or cement by raising the tubing 30 in the well and removing a joint of the tubing. Then the apparatus for carrying the cement is suspended in the oil derrick over the well and lowered therein to a point where the opening l in the tubular element I3 is at a convenient position for the workmen who then fill the tubular element I3 with concrete or cement by passing the concrete or cement through the opening l5 and dropping it in the tubular element I3.

After the tubular element |3 has been filled with the concrete or cement, the apparatus is lowered in the well. On the way down, the sharp points on the upper end of the releasing dogs 26 slide against the wall of the oil Well tubing 30 as illustrated in Fig. 3. When the apparatus has reached the place where it is desired to dump the concrete or cement, the apparatus is slowly raised. The sharp'points of the releasing dogs 26 catch on the wall of the oil well tubing 30 and hold the polished rod slip 24 stationary, while the balance of the apparatus continues to move upwardly thereby slipping the polished piston rod upwardly through the slip 24, thereby compressing the spring 23 and holding the tube 39' stationary, which results in the removalof the tube 39 from in front of the port 34 so the port is open, at which time the spring pushes the piston 19 downward, discharging the oil thereunder through the hole 35, port 34 and through the tube 39 where it is discharged into the oil well. Simultaneously with action just described the piston rod I6 is forced downwardly, the collar contacts the slip 24 and pushes it downwardly, thereby dragging the points of the releasing dogs 26 inside the tube like element 3 as shown in Fig. 6. Simultaneously with this action, another action takes place which is as follows. The piston rod l6 being moved downwardly, the sealing element 5| was allowed to drop from its place at the end of the tubular element |3 at which time it took the position shown in Fig. 5, and the concrete or cement in the tubular element |3 was discharged,bygravity,fromthe tubular element l3 into the oil well as illustrated in Fig. 17. Now the apparatus is removed from the oil well. If more concrete or cement is desired in the well than the apparatuswould carry at one time; the oil well tubing is again raised, another joint of the oil well tubing is removed and the process of recharging the apparatus with concrete or cement and placing it in the oil well is repeated, the same as above described.

Now having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An apparatus for cementing oil well tubing comprising, means for supporting said apparatus, a container for holding cement, a removable bottom for said container, a hydraulic means for retaining said bottom on said container, and means for effecting the release and removal of said bottom from'said container upon the upward movement of said container in the oil well tubing.

2. An apparatus for cementing oil well tubing comprising, means for supporting said apparatus, an open ended container for holding cement, a removable bottom for said container, hydraulic -means for retaining said bottom on saidcontainer and releasing it therefrom, said hydraulic means comprising a cylinder, a piston in said cylinder, a piston rod, attached to said piston, a cylinder head beneath said piston, said piston rod slidably passing through said head, an element connecting between the lower end of said piston and said bottom, means for applying hydraulic pressure between said piston and said head for the purpose of retaining said bottom on said container.

3. An apparatus for cementing oil well tubing as described in claim 2, valve means for releasing said hydraulic pressure, said valve means being operatable by a mechanism on said piston rod, said mechanism comprising a slip element on said piston rod, dogs pivotally mounted on said slip, said dogs having sharp upwardly directed points which protrude through slots in the container element and rest against the oil well tubing, a spring carried on said piston rod and supporting said slip, means connecting between said slip and said valve means for releasing said hydraulic pressure, said dogs being adapted to catch on the oil well tubing and hold the slip element stationary upon the upward movement of said apparatus and thereby efiect the opening of said valve for the release of said hydraulic pressure as and for the purpose set forth.

4. An apparatus for cementing, oil well tubing as described in claim 2, a spring in said cylinder, said spring being under compression between said piston and the upper end of said cylinder and functioning to move the piston downward to release the bottom from said container upon the release of the hydraulic pressure.

5. An apparatus for cementing oil well tubing as described in claim 2, an opening in the upper portion of said container for the purpose of loading the container.

6. An apparatus for cementing oil well tubing as described in claim 2, valve means for retaining or releasing a hydraulic pressure between said piston and cylinder head, means on said piston rod for opening said valve, a connecting element between said valve and means for opening said valve and means for disconnecting said connecting element from said means for opening said valve.

WALTER CREEK. 

